Car-brake.



No. 6a4,|7a. ranma out. a, 19m. l P. ocH.

CAB BRAKE.

{Application led Feb. 20, 19451.)

W/TNESSES Patented Oct. 8, ISUI.

P. Buca,

cna BRAKE. (Application vlnd Feb. 20, 1901.)

3 Shasta-Sheet 2.

(No Model.)

Mu" l fr Mu Y No. 684,!78. Patentedct. 8, i901.

P. BOCH.

CAR BRAKE (Applictionled Feb. 20, 1901.)

(no maar.) 3 sheets-sheet s.

A l l A1 INVENTO NrTan STATES PATENT Ormes.

PHILIPP BOCH, OF NEW YORK, N. Y.

CAR-BRAKE.

SPECFICATION forming part of Letters Patent N o. 684,178, dated October 8, 1901.

Application tiled February 20, 1901. Serial No. 48,087. (No model.)

.To all whom, t may concern.-

Be it known that I, PHILIPPBOCH, a citizen of the United States, residing in New York, borough of Queens, in the State of New York, have invented certain new 'and -useful Improvements in Oar-Brakes, of which the following is a specication.

This invention relates to certain improvements in the car-brake for which Letters Patent of the United States were granted to me, No. 663,827, dated December ll, 1900, the improvements being designed with the View of permitting not only vertical movement of the rail brake-shoe, but also lateral motion of the rail brake-shoe,so as to permit the easy rounding of curves and to impart such a degree of iiexibility to the rail brake-shoe as required by the various exigencies to which the rolling-stock is subjected.

Theinvention consists of a car-brake which comprises guide-plates suitably supported on the car truck, side plates guided by said guide-plates, a brake-beam supported by said side plates,swinging arms suitably supported on the side plates, rail brake-shoes carried by the outer ends of the swinging arms, means for holding the said brake-shoes in released position, means for applying the said brakeshoes, and means connecting the pivoted arms for permitting the lateral motion of the rail brake-shoes, so as to follow the rails without injurious strains on the operative parts; and the invention consists, lastly, of certain details of construction and combinations of parts, which will be fully described hereinafter and finally claimed.

In the accompanying drawings, Figure l represents a side elevation, partlyinsection, of my improved car-brake, showing the same applied to the frame of the car-truck and in inoperative position. Fig. 2 is a horizontal section on line 2 2, Fig. l. Fig. 3 is a like side elevation to Fig. l, showing the brake in position applied to the wheels and rails and in which the car is supposed to be turning a curve. Fig. l is a horizontal section on line @l et, Fig. 3; and Fig. 5 is a plan view of my improved brake and its operative mechanism.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A A represent a portion of the truck-frame which is equipped with my improved brake, said frame having bracket extensions A connected by a crossbeam B of T-shaped cross-section. On these bracket extensions A are mounted the working parts of the brake, which are supported more directly on parallel guide-plates C, that are attached to said extensions at opposite sides of the car -truck by means of clamping-bolts C C', that fit over the extensions and are attached thereto by screw-bolts C2, which rigidly bind the xed portion of the clamps down upon said extensions. The guide-plates C are preferably shaped in such manner that their outer extremities are located approximately in the'vertical planes of the car-wheels. The brake itself is composed of two brake-shoes, the one, D, being the rail brake shoe, and E the wheel brake-shoe, suitably supported on the movable side plates F.

G is the brake-beam, of T-shaped crosssection, the ends of which are suitably secured to the side plates F, as shown in Figs. 1 and 3, by means of saddles F', which project from the side plates F and are xed thereto by suitable fastening devices. The guide-plates C are provided at points preferably above and below the axles With inclined slots c and c2, respectively, said slots receiving and guiding the pins f f', projecting from the plates F. At the inner side of the brakebeam Gr are lugs or brackets g, to which are pivoted the lower ends of links h, the upper ends of which are secured to rods H, which are guided in lugs or brackets b, secured to the inner side of the cross-beam B. The rods H are screw-threaded at their upper ends toreceive the nuts h', between which and the lugs Z) helical lifting-springs I are conlined which tend to draw the. side plates F in upward direction, together with the wheel brake-shoes D, which are thereby held in raised position above the rails T, as shown in The levers K are pivoted to IOO lugs b on the cross-beam B and are also pivoted at lc to the wedge-shaped depressors M, Whose upper and lower surfaces bear on antifriction-rollers 0 and 29, mounted in suitable bearings of the cross-beam B and brake-beam G, respectively. Integral with each of the depressors M is formed a hook M', which eX- tends downward at right angles thereto and which constitutes a latch, the hooked lower end of which is adapted to engage with the under side of the brake-beam G, so as to positively lock the brake-shoes in-raised or inoperative position until released by the action of the lever K.

The parts so far described correspond more or less to the operative parts of the brake construction heretofore patented by me. The new feature of this invention consists in the peculiar means by which a lateral motion is imparted to the rail brake-shoes D relatively to the side plates F. For this purpose the rail brake-shoe is provided at its rear'end with a downwardly-extending lug that eX- tends sidewise of the rail-head. The rail brake-Shoe D is also provided with an upwardly-extending lug D', that is pivoted to an intermediate block D2, whichis connected by a laterally-extending arm D3 with a bracketarm D4, that extends from the side plate F. The block D2 is provided with a curved transversely-extending guide portion D5, guided in a recess D6 in the side plate F and which receives an antifriction-roller Y, applied in suitable bearings of the side plate F, as shown in Figs. 2 and 4, said guide portion being curved concentric with the pivot d and both guide portions being provided with eX-A tension-eyes CZ', connected by a rod D7, as shown in Fig. 5. By means of the guideways on the auxiliary block D2 the block, together with the rail brake-shoe, will be antamatically shifted out of the plane of the supporting guide-plate F into either direction, according to the curvature of the track, the shifting motion being imparted by contact of the downwardly-extendingguide-lug with the side of the rail-head, so that thereby the brake adapts itself readily to the track Without eX- erting any strain on the operative parts of Y V Y the brake.

lWhat l claim as new is l. In a car-brake, the combination of guideplatessupported from the car-truck, a brakebeam suitably guided between said plates, pivoted arms suitably supported from the brake-beam, rail brake-shoes mounted on the Y free ends of the said arms, means for connecting the said arms, and means for applying ebi Y beam supported by said side plates, arms pivoted at one end to portions of said side plates, rail brake-shoes carried by the other ends of the arms, means for connecting the arms, and means acting on the brake-beam for applying the brake, substantially as set forth. Y

3. In a car-brake, the combination of suitably-connected side plates, means for mounting the same movably on a car-truck, arms pivoted at one end to portions of said plates, and provided with curved guide portions, antifriction-rollers mounted in the side plates and on which the side portions bear, rail brake-shoes carried by said arms, and means for applying the brake-shoes, substantially as set forth.

4. In a car-brake, the combination of connected side plates, means for supporting the same, movably from the car-truck, arms pivoted at one end to said plates, blocks carried by the free ends ot` said arms, rail brake-shoes pivoted to said blocks, curved guide portions also carried by the arms, antifriction-rollers mounted in the side plates and on which said guide portions bear, and means for moving the side plates for applying the brake-shoes, substantially as set forth.

In testimony that l claim the foregoing as my invention I have signed my name in presence of two subscribing Witnesses.

PHiLIPP BOCH.

YWitnesses:

PAUL GOEPEL, GEORGE C. GEIBEL.

8oV 85 Y 

